pseudolocalize 0.3.1

Pseudolocalization crate for Rust.
Documentation 
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pub(crate) fn crop_string(base_length: usize, extension: &str, percentage: u32) -> String {
    let increased_length = (percentage as usize) * base_length / 100;
    let mut extended_string = String::new();
    let mut i = increased_length;
    while i > 0 {
        let copied = strncpy(&mut extended_string, extension, i);
        i -= copied;
    }
    extended_string
}

/// Copy `n` characters for `src` and append them to `dst`.
/// Return the number of actual copied characters.
fn strncpy(dst: &mut String, src: &str, n: usize) -> usize {
    let mut copied = 0;
    for i in src.chars().take(n) {
        dst.push(i);
        copied += 1;
    }
    copied
}

#[cfg(test)]
mod tests {
    use super::crop_string;

    #[test]
    fn same_as_base_string() {
        let s = crop_string(10, "🤗洗い熊のJérôme😃🙃", 100);
        assert_eq!(s, "🤗洗い熊のJérôm");
    }

    #[test]
    fn half_of_base_string() {
        let s = crop_string(10, "🤗洗い熊のJérôme😃🙃", 50);
        assert_eq!(s, "🤗洗い熊の");
    }

    #[test]
    fn twice_base_string() {
        let s = crop_string(10, "🤗洗い熊のJérôme😃🙃", 200);
        assert_eq!(s, "🤗洗い熊のJérôme😃🙃🤗洗い熊のJé");
    }
}